Tools XML Inspector and XPath Generator/en - Versionsgeschichte

Cg: Cg verschob die Seite Tools XML Inspector/en nach Tools XML Inspector and XPath Generator/en

2026-03-08T08:05:21Z

Cg verschob die Seite Tools XML Inspector/en nach Tools XML Inspector and XPath Generator/en

← Nächstältere Version	Version vom 8. März 2026, 08:05 Uhr
(kein Unterschied)

Cg: /* Opening the XML Inspector */

2026-03-07T23:56:14Z

Opening the XML Inspector

← Nächstältere Version		Version vom 7. März 2026, 23:56 Uhr
Zeile 44:		Zeile 44:
	inspected string represents an XML document.		inspected string represents an XML document.

	Programmatically, (try it in a workspace or a code editor, by selecting the expression and executing it with ''doIt''):		Programmatically an inspector is opened by sending the "inspect" message to any object - in this case to a string (try it in a workspace or a code editor, by selecting the expression and executing it with ''doIt''):
	\|text\|		\|text\|
	text := '<DOC> .... </DOC>'.		text := '<DOC> .... </DOC>'.

Cg: /* Trying XPath Expressions */

2026-03-07T21:50:12Z

Trying XPath Expressions

@@ Zeile 65: / Zeile 65: @@
 == Trying XPath Expressions ==
-Here are a few examples on how to use XPath:
+Here are a few examples on how to use XPath on the following XML string:
 ==== Selecting and Processing Nodes ====

Cg: /* Programmatically */

2026-03-07T20:57:46Z

Programmatically

← Nächstältere Version		Version vom 7. März 2026, 20:57 Uhr
Zeile 84:		Zeile 84:
	sum(//REGION[text()]/following-sibling::COST[text()])		sum(//REGION[text()]/following-sibling::COST[text()])

	==== Programmatically ====		==== Programmatically Operating on a NodeSet ====

			In a real application, you would provide the XML document via an input pin; either as
			a string (and parsed as shown below), or as a filename, or as an already constructed DOM object.
			Notice, that the XML library already provides corresponding action blocks,
			so the following is presented to give you some background details
			(it may also be useful to process the nodeSet programmatically for performance reasons,
			or because a corresponding XPath function is not available or the XPath expression becomes
			too complex and unmaintanable).

	Using an elementary Smalltalk action, the above operations can be implemented with:		Using an elementary Smalltalk action, the above operations can be implemented with:
	\|xml xpath nodes\|		\|xml dom xpath nodes\|

	xml := '<DOC>...</DOC>'.		xml := '<DOC>...</DOC>'.
			dom := XML::XMLParser parse:xml.
	xpath := XML:XPathParser parse:'//REGION[text() = "East"]/following-sibling::COST[]'.		xpath := XML:XPathParser parse:'//REGION[text() = "East"]/following-sibling::COST[]'.
	nodes := xpath nodesMatchingInDocument:~~xml~~.		nodes := xpath nodesMatchingInDocument:dom.
	nodes do:[:eachNode \|		nodes do:[:eachNode \|
	"/ ... do something with eachNode ...		"/ ... do something with eachNode ...
Zeile 102:		Zeile 111:
	nodes sum:[:eachNode \| eachNode characterData asNumber]		nodes sum:[:eachNode \| eachNode characterData asNumber]
	<small>=> prints 500 on the Transcript</small>		<small>=> prints 500 on the Transcript</small>

			==== Programmatically Using XPath Functions ====
			You can also use XPath functions which operate on a NodeSet.
			In this case, you will not get a NodeSet but a value such as a string or number from
			the XPath evaluation.
			For example:
			...
			xpath := XML:XPathParser parse:'max(//REGION[text() = "East"]/following-sibling::COST[])'.
			maxValue := xpath xPathValueFor:dom.
			<small>=> maxValue will be 300</small>
			or:
			...
			xpath := XML:XPathParser parse:'sum(//REGION[text() = "East"]/following-sibling::COST[])'.
			sum := xpath xPathValueFor:dom.
			<small>=> sum will be 500</small>


	Back to [[Online_Documentation#Tools \| Online Documentation]].		Back to [[Online_Documentation#Tools \| Online Documentation]].

Cg: /* Opening the XML Inspector */

2026-03-07T20:41:04Z

Opening the XML Inspector

← Nächstältere Version		Version vom 7. März 2026, 20:41 Uhr
Zeile 62:		Zeile 62:

	[[File:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]		[[File:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]

			== Trying XPath Expressions ==

			Here are a few examples on how to use XPath:

			==== Selecting and Processing Nodes ====

			To get all COST elements (as a set of nodes), use:
			//COST
			to get their contents (as strings):
			//COST[text()]
			to get all Nodes for a particular REGION:
			//REGION[text() = "East"]
			to get the COST elements for a particular REGION
			//REGION[text() = "East"]/following-sibling::COST
			and those values:
			//REGION[text() = "East"]/following-sibling::COST[text()]
			the maximum of them:
			max(//REGION[text() = "East"]/following-sibling::COST[text()])
			the sum of them:
			sum(//REGION[text()]/following-sibling::COST[text()])

			==== Programmatically ====

			Using an elementary Smalltalk action, the above operations can be implemented with:
			\|xml xpath nodes\|

			xml := '<DOC>...</DOC>'.
			xpath := XML:XPathParser parse:'//REGION[text() = "East"]/following-sibling::COST[]'.
			nodes := xpath nodesMatchingInDocument:xml.
			nodes do:[:eachNode \|
			"/ ... do something with eachNode ...
			"/ in this case, this will be each COST element;
			"/ extract its text, make it a number and show it
			Transcript showCR: (eachNode characterData asNumber).
			<small>=> prints 200 and 300 on the Transcript</small>
			].
			or sum those values:
			nodes sum:[:eachNode \| eachNode characterData asNumber]
			<small>=> prints 500 on the Transcript</small>

	Back to [[Online_Documentation#Tools \| Online Documentation]].		Back to [[Online_Documentation#Tools \| Online Documentation]].

Cg: /* Opening the XML Inspector */

2026-03-07T20:20:28Z

Opening the XML Inspector

← Nächstältere Version		Version vom 7. März 2026, 20:20 Uhr
Zeile 61:		Zeile 61:
	Or select the string only (incl. the quotes) and execute the "''InspectIt''" menu function,		Or select the string only (incl. the quotes) and execute the "''InspectIt''" menu function,

	[[~~Datei~~:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]		[[File:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]

	Back to [[Online_Documentation#Tools \| Online Documentation]].		Back to [[Online_Documentation#Tools \| Online Documentation]].

Cg: /* Opening the XML Inspector */

2026-03-07T20:17:49Z

Opening the XML Inspector

← Nächstältere Version		Version vom 7. März 2026, 20:17 Uhr
Zeile 44:		Zeile 44:
	inspected string represents an XML document.		inspected string represents an XML document.

	Programmatically, ~~execute~~ (in a workspace or in a code editor, ~~select~~ an ''doIt''):		Programmatically, (try it in a workspace or a code editor, by selecting the expression and executing it with ''doIt''):
	\|text\|		\|text\|
	text := '<DOC> .... </DOC>'.		text := '<DOC> .... </DOC>'.
Zeile 58:		Zeile 58:

	[[Datei:openXMLInspector1.png\|thumbnail\|200px\|Opening Inspector in Workspace]]		[[Datei:openXMLInspector1.png\|thumbnail\|200px\|Opening Inspector in Workspace]]

			Or select the string only (incl. the quotes) and execute the "''InspectIt''" menu function,

	[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]		[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]

Cg: /* Opening the XML Inspector */

2026-03-07T16:54:24Z

Opening the XML Inspector

← Nächstältere Version		Version vom 7. März 2026, 16:54 Uhr
Zeile 57:		Zeile 57:
	"<DOC>...</DOC>".inspect()		"<DOC>...</DOC>".inspect()

	[[Datei:~~XMLInspect1~~.png\|thumbnail\|200px\|Opening Inspector in Workspace]]		[[Datei:openXMLInspector1.png\|thumbnail\|200px\|Opening Inspector in Workspace]]

	[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]		[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]

Cg am 7. März 2026 um 16:49 Uhr

2026-03-07T16:49:02Z

← Nächstältere Version		Version vom 7. März 2026, 16:49 Uhr
Zeile 57:		Zeile 57:
	"<DOC>...</DOC>".inspect()		"<DOC>...</DOC>".inspect()

	[[Datei:~~XMLInspector1~~.png\|thumbnail\|200px\|~~XML~~ Inspector ~~showing~~ ~~the DOM~~]]		[[Datei:XMLInspect1.png\|thumbnail\|200px\|Opening Inspector in Workspace]]

			[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]

	Back to [[Online_Documentation#Tools \| Online Documentation]].		Back to [[Online_Documentation#Tools \| Online Documentation]].

Cg am 7. März 2026 um 16:43 Uhr

2026-03-07T16:43:58Z

← Nächstältere Version		Version vom 7. März 2026, 16:43 Uhr
Zeile 38:		Zeile 38:
	</DOC>		</DOC>

			== Opening the XML Inspector ==
			As described elsewhere, the inspector can be opened via the pin-value popup menu, programmatically or via an action from the standard library. It is also embedded into a FileBrowser when an XML document file is double clicked or selected inside a zip archive there.

			Finally, the regular inspector also contains a DOM tab if the
			inspected string represents an XML document.

			Programmatically, execute (in a workspace or in a code editor, select an ''doIt''):
			\|text\|
			text := '<DOC> .... </DOC>'.
			text inspect
			or:
			'<DOC>...</DOC>' inspect
			or in JavaScript:
			var text;
			text = "<DOC> .... </DOC>".
			text.inspect()
			or:
			"<DOC>...</DOC>".inspect()

	[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]		[[Datei:XMLInspector1.png\|thumbnail\|200px\|XML Inspector showing the DOM]]